防治视力损害既是公共卫生事业的一部分，也是眼科学的重要组成部分。
The prevention of visual loss is not only a part of public health undertaking, but also an important component of Ophthalmology.
防治视力损害既是公共卫生事业的一部分，也是眼科学的重要组成部分。
The prevention of visual loss is not only a part of public health undertaking, but also an important component of Ophthalmology.
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